Appendix A
Screen icons, lights & tones
Screen icons & alert tones
Screen icons
HANDSET 1
25 MISSED CALLS
MUTE NEW
10:21AM 11/23
Speakerphone is in use.
New voicemail messages have been received. Ringer off.
Microphone is muted. Missed and new calls.
Battery charging (animated display).
Low battery (flashing); place handset in telephone base or charger to recharge.
Handset tones
Two short beeps
Four short beeps
Four beeps followed by a pause and another four beeps
Two beeps
Three rising tones
VOLUME 
keys are pressed when the volume is already at its highest or lowest setting.
Low battery warning.
An intercom call is being terminated.
Out of range while the handset is on a call.
Command completed successfully.
Telephone base tones
Beeps every 10 seconds
A series of beeps
Message alert.
VOLUME 
keys are pressed when the volume is already at its highest or lowest setting.
Lights
IN USE
On when handset is in use, when the answering system is answering an incoming call or you are registering a handset.
Flashes when another telephone is in use on the same line, or you are deregistering handsets from the telephone base.
Flashes quickly when there is an incoming call.
VOICEMAIL
Flashes when you have new voicemail. Voicemail is a service offered by your telephone service provider, and is different from answering system messages.
ANSWER ON
On when answering system is on and ready to receive calls.
CHARGE
On when the 
handset is charging 
in the telephone 
base or charger.
Blue backlit
display
Blue backlit keypad
SPEAKER
On when the speakerphone is on.
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